feat: Update k3s VM startup script with improved disk formatting and user configuration

gcloud/tf/scripts/k3s-vm-startup.sh

@@ -1,12 +1,32 @@
 #!/bin/bash
 
-# Format the disk if not already formatted
+# Format the k3s disk if not already formatted
+
+# This command creates an ext4 filesystem on the specified 
+# disk with no reserved space for root, forces the operation, 
+# fully initializes inode tables and the journal, and enables 
+# discard/TRIM for better performance on SSDs or 
+# thin-provisioned storage.
 if ! lsblk | grep -q "/mnt/disks/k3s"; then
     mkfs.ext4 -m 0 -F -E lazy_itable_init=0,lazy_journal_init=0,discard /dev/disk/by-id/google-k3s-disk
-    mkdir -p /mnt/disks/k3s
-    mount -o discard,defaults /dev/disk/by-id/google-k3s-disk /mnt/disks/k3s
-    chmod a+w /mnt/disks/k3s
+    mkdir -p /var/lib/rancher/k3s
+    mount -o discard,defaults /dev/disk/by-id/google-k3s-disk /var/lib/rancher/k3s
+    chmod a+w /var/lib/rancher/k3s
 fi
+# A disk named k3s-disk in your Terraform configuration will
+# appear as /dev/disk/by-id/google-k3s-disk.
+
+# Format the app-data-disk if not already formatted
+if ! lsblk | grep -q "/mnt/disks/app-data"; then
+    mkfs.ext4 -m 0 -F -E lazy_itable_init=0,lazy_journal_init=0,discard /dev/disk/by-id/google-app-data-disk
+    mkdir -p /mnt/disks/app-data
+    mount -o discard,defaults /dev/disk/by-id/google-app-data-disk /mnt/disks/app-data
+    chmod a+w /mnt/disks/app-data
+fi
+# Similarly, a disk named app-data-disk will appear as /dev/
+# disk/by-id/google-app-data-disk.
+
+
 
 # ensure only run once
 if [[ -f /etc/startup_was_launched ]]; then exit 0; fi
@@ -21,13 +41,38 @@ curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/main/scrip
 chmod 700 get_helm.sh
 /bin/bash get_helm.sh
 
-# bashrc config
-rc=/root/.bashrc
-echo "alias l='ls -lah'" >> $rc
-echo "alias ll='ls -lh'" >> $rc
-echo "alias k=kubectl" >> $rc
-echo "export dry='--dry-run=client'" >> $rc
-echo "export o='-oyaml'" >> $rc
+# user bashrc config
+rc=/home/user/.bashrc
+{
+    echo "export KUBECONFIG=~/.kube/config"
+    echo "alias l='ls -lah'"
+    echo "alias ll='ls -lh'"
+    echo "alias k=kubectl"
+    echo "export dry='--dry-run=client'"
+    echo "export o='-oyaml'"
+    echo "alias kcd='kubectl config use-context'"
+    echo "source <(kubectl completion bash)"
+    echo "complete -F __start_kubectl k"
+    echo "alias k='kubectl'"
+} >> $rc
+
 
 # Install k3s and configure it to use the persistent disk for data storage
-curl -sfL https://get.k3s.io | INSTALL_K3S_EXEC="--data-dir /mnt/disks/k3s" sh -
+# curl -sfL https://get.k3s.io | INSTALL_K3S_EXEC="--data-dir /mnt/disks/k3s" sh -
+
+k3s_version="v1.32.8+k3s1"
+curl -sfL https://get.k3s.io \
+| \
+    INSTALL_K3S_VERSION="$k3s_version" sh -s - server \
+    --cluster-init \
+    --disable traefik \
+    --disable servicelb 
+
+
+mkdir -p /home/user/.kube
+chown user:user /home/user/.kube
+chmod 700 /home/user/.kube
+# Copy the kubeconfig file to the user's home directory 
+# for easier access
+cp /etc/rancher/k3s/k3s.yaml /home/user/.kube/config
+chown user:user /home/user/.kube/config